From: https://github.com/http2/http2-spec/issues/28
HTTP/2.0 requires that implementations support a minimum frame size of
8192 bytes. The draft does not specify how an implementation is
expected to learn that its peer has limited frame sizes other than by
trial and error. Using RST_STREAM causes the error to be discovered
after the problem has been encountered.
It's also not possible to use RST_STREAM to reject a too-large frame
that is not bound to a specific stream.
This could be indicated in the SETTINGS frame.
--
Any objections to adding a new setting for maximum frame size (minimum
value of 8192 bytes).